What's the point of the up/down votes in the first place? If the object is reducing bias, doesn't making commenting a popularity contest run counter to this purpose?
Quality control. Ideally, people should not upvote/downvote based on conclusions they disagree with.
I recall hearing that the highest-karma comment ever was criticism MIRI, which would suggest that this works as intended. I'm not sure how to check this, though.
ETA: found it.
Below is a message I just got from jackk. Some specifics have been redacted 1) so that we can discuss general policy rather than the details of this specific case 2) because presumption of innocence, just in case there happens to be an innocuous explanation to this.
So... thoughts? I have mod powers, but when I was granted them I was basically just told to use them to fight spam; there was never any discussion of any other policy, and I don't feel like I have the authority to decide on the suitable course of action without consulting the rest of the community.